Middle English word merthe comes from Proto-Germanic - iþō, Proto-Germanic *mēraz (Famous. Great; excellent.)

Detailed word origin of merthe

Dictionary entry	Language	Definition
- iþō	Proto-Germanic (gem-pro)
*mēraz	Proto-Germanic (gem-pro)	Famous. Great; excellent.
*mēriþō	Proto-Germanic (gem-pro)	Fame; popularity; celebrity; renown; reputation.
mǣrþo	Old English (ang)
merthe	Middle English (enm)

Words with the same origin as merthe